Cost-effective measurement setups for testing wireless communication to vehicles in reverberation chambers and anechoic chambers

Autonomous (self-driving) cars will in a few years become a reality, driven by safety aspects. This will be made possible by reliable and secure wireless connections to the car via the wireless network, and directly from other vehicles in the close vicinity. Thereby OTA-testing becomes a big issue, both in multipath and Line-Of-Sight (LOS). The present paper proposes two compact and cost-effective test chambers that take account of the two limiting environments known as Rich Isotropic Multipath (RIMP) and Random-LOS. The randomness of the latter is associated with the unknown and arbitrarily distributed angle of arrival of the LOS in the horizontal plane, sometimes also having an unknown polarization, which thereby also become random.